.travis.yml in autobuild-1.14.1 vs .travis.yml in autobuild-1.15.0

@@ -1,6 +1,6 @@
-sudo: false
+sudo: true
 language: ruby
 rvm:
   - '2.1'
   - '2.2'
   - '2.3'
@@ -8,5 +8,13 @@
   - '2.5'
   - 'jruby-9.1.15.0'
 matrix:
     allow_failures:
         - rvm: 'jruby-9.1.15.0'
+
+install:
+  - gem install bundler
+  - bundle install --path vendor/bundle
+
+script:
+  - bundle exec rake
+  - bundle exec rake test